.portfolio_imagebuttons_overlay
	{
		opacity:0.85;
        filter:alpha(opacity=85); /* For IE8 and earlier */
		
		-webkit-filter: grayscale(1);
		
		float:left;
		padding: 5px;
	}	


.portfolio_imagebuttons_overlay:hover

	{
	-webkit-transition-property: image; 
	-webkit-transition-duration: 0.3s; 
	-webkit-transition-timing-function: ease;
	-webkit-filter: none;
	
	transition-property: image; 
	transition-duration: 0.3s;
	transition-timing-function: ease;
	
	-moz-transition-property: background; 
	-moz-transition-duration: 0.3s; 
	-moz-transition-timing-function: ease;
	
	opacity:1.0;
	filter:alpha(opacity=100); /* For IE8 and earlier */
	}

.portfolio_imagebuttons_overlay:active
{
	opacity: 0.6;
	filter:alpha(opacity=60); /* For IE8 and earlier */
}